Patents Examined by Ellis Ramirez
  • Method and apparatus for determining polymer molecular weight distribution parameters
    Patent number: 4775943
    Abstract: Method and apparatus for determining various molecular weight distribution parameters by concurrent measurement of hydrodynamic volume, specific viscosity and mass. Essentially concurrent viscosity and mass detectors are described, as are improved methods for viscosity detection, which together provide substantially improved results.
    Type: Grant
    Filed: October 16, 1985
    Date of Patent: October 4, 1988
    Assignee: The Dow Chemical Company
    Inventors: Thomas A. Chamberlin, Hendrik E. Tuinstra